ATBECHDEDKESFRGBGRITLILUNLSEMCPTIESILTLVFIROMKCYAL..............................JDIM350 (Ver 2.1 Jan 2001) 1990980/0 1620000/00975198EUROPEAN PATENT APPLICATIONA320040121EP99114214.219990726EnEnEn94106 P19980724US20040121200404200001262000047 7H 04Q 11/04 Ade1:N Redundanz in einem Kommunikationssystemen1:N Redundancy in a communications systemfrRedondance 1:N dans un reséau de communication37Hughes Electronics Corporation024640502405P830EP ML/m200 N. Sepulveda BoulevardEl Segundo, California 90245-0956USWendling Daniel R.19201 Barnestown RoadBickerson,Maryland 20842USLohman Mike S.15719 Mahogan Circle 201Gaithersburg,Maryland 20878USKay Stanley E.15009 Flower Valley CourtRockville,Maryland 20853USKhan Tayyab10120 Little Pound Place 4Montgomery Village,Maryland 20886USLindner, Michael, Dipl.-Ing.et al00080044Patentanwälte, Witte, Weller & Partner, Postfach 10546270046 StuttgartDEATBECHCYDEDKESFIFRGBGRIEITLILUMCNLPTSEALLTLVMKROSI20040121200404

A 1:N redundancy system (3700) for a wireless point to multipoint communications system (100) which consists of a plurality of active communications terminals (3702, 3704) and a wireless communications link comprising a plurality of subchannels (3714, 3716), wherein each of said active communications terminals communicates to a respective plurality of remote communications terminals (3710, 3712) via a respective one of the plurality of subchannels. The system also comprises a backup communications terminal (3706) for replacing any one of the plurality of active communications terminals in the event the one of the plurality of active communications terminals fails and a multiplexer (3724) coupled to each of plurality of active communications terminals and the backup communications terminal.